PVC
PVC
?????? ?????: ?????: ?????? ????? ??????? ??????, ?? ??? ????? ??? ????? ???????, ??????? ????? ???????? ??????. ?????: ????? ??????? ?????? ?? ???? ?????? ?????? ???? ????????, ????? ???? ???????? ?????? ???????, ????? ?????? ??? ???. ????? ?????: ??? ?? ?????? ?? ??? ??????? ???????, ?? ??? PVC ????? ??? ?????, ???? ?? ????? ???????.
????? ?????? PVC ?????? ?? ??? HPMC ?????? ?????, ????? ?????? ????????? ?????? ????????? ??????????, ?? ?? ?? ?????? ????????? ????? ??????, ?????? ??????? ??????? ???????? ????????? ??? ?????. ?????? ????? ????????, ??????? ?????????? (PVA) ?? ????? ????? ?? ?????????? ??????? ?????? ??????? ?????????????? ??????????? (HPMC) ??? ????, ?? ?????? ????????? ????, ??? ????? ?????? ??????.
